/*
 * aTunes 2.2.0-SNAPSHOT
 * Copyright (C) 2006-2011 Alex Aranda, Sylvain Gaudard and contributors
 *
 * See http://www.atunes.org/wiki/index.php?title=Contributing for information about contributors
 *
 * http://www.atunes.org
 * http://sourceforge.net/projects/atunes
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

package net.sourceforge.atunes.kernel.modules.navigator;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import javax.swing.tree.DefaultMutableTreeNode;

import net.sourceforge.atunes.model.IAudioObject;
import net.sourceforge.atunes.model.ILocalAudioObject;
import net.sourceforge.atunes.model.ITreeObject;
import net.sourceforge.atunes.model.ViewMode;

class RepositoryAudioObjectsHelper {

    /**
     * Returns objects from node with view and filter or all objects if selection is root and no filter
     * @param allObjects
     * @param node
     * @param viewMode
     * @param treeFilter
     * @return
     */
    List<? extends IAudioObject> getAudioObjectForTreeNode(Collection<ILocalAudioObject> allObjects, DefaultMutableTreeNode node, ViewMode viewMode, String treeFilter) {
        List<ILocalAudioObject> songs = new ArrayList<ILocalAudioObject>();
        if (node.isRoot()) {
            if (treeFilter == null) {
                songs.addAll(allObjects);
            } else {
                for (int i = 0; i < node.getChildCount(); i++) {
                    @SuppressWarnings("unchecked")
					ITreeObject<ILocalAudioObject> obj = (ITreeObject<ILocalAudioObject>) ((DefaultMutableTreeNode) node.getChildAt(i)).getUserObject();
                    songs.addAll(obj.getAudioObjects());
                }
            }
        } else {
            @SuppressWarnings("unchecked")
			ITreeObject<ILocalAudioObject> obj = (ITreeObject<ILocalAudioObject>) node.getUserObject();
            songs = obj.getAudioObjects();
        }
        return songs;
    }

}
